使用的技术：Bootstrap 3.1.1，jQuery 1.11
目标：我有一个部分，我只想在移动设备上加载它的内容。
如果我刚刚使用了Bootstrap的visible-sm和hidden-lg类，则内容仍会加载到更大的设备/大小上，从而产生开销。
我的部分代码如下。我只想加载＆amp;在移动设备上显示它的内容。我知道可见和隐藏的课程显示＆amp;隐藏，但我只想在移动设备上加载它 - 这是关键。没有开销。
<section id="category-icons" class="row visible-xs visible-sm hidden-md hidden-lg">
<div class="container White_BG">
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Hand Tools" target="_blank"><img class="img-responsive" src="/images/art/Handtools-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Field Production" target="_blank"><img class="img-responsive" src="/images/art/Fieldproduction-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Pruning Tools" target="_blank"><img class="img-responsive" src="/images/art/Pruning-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Material Handling" target="_blank"><img class="img-responsive" src="/images/art/materialhandling-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Safety Equipment" target="_blank"><img class="img-responsive" src="/images/art/safetyequipment-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Sprayers & Spreaders" target="_blank"><img class="img-responsive" src="/images/art/sprayers-spreaders-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Watering & Irrigation" target="_blank"><img class="img-responsive" src="/images/art/watering-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Marking & Tagging" target="_blank"><img class="img-responsive" src="/images/art/markingtagging-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Herbicides & Pesticides" target="_blank"><img class="img-responsive" src="/images/art/herbicides-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Greenhouse Production" target="_blank"><img class="img-responsive" src="/images/art/greenhouse-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Fertilizers & Treatments" target="_blank"><img class="img-responsive" src="/images/art/fertilizers-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Container Production" target="_blank"><img class="img-responsive" src="/images/art/containerproduction-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Pest Control" target="_blank"><img class="img-responsive" src="/images/art/pestcontrol-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Power Equipment" target="_blank"><img class="img-responsive" src="/images/art/powerequipment-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Work Wear" target="_blank"><img class="img-responsive" src="/images/art/workwear-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Turf & Landscape" target="_blank"><img class="img-responsive" src="/images/art/turf-landscape-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Arborist Equipment" target="_blank"><img class="img-responsive" src="/images/art/arborists-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Measuring & Surveying" target="_blank"><img class="img-responsive" src="/images/art/measuring-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Maintenance Supplies" target="_blank"><img class="img-responsive" src="/images/art/maintenance-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Snow Removal" target="_blank"><img class="img-responsive" src="/images/art/snowremoval-cat-sprite.png"></a>
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-4">
<a href="/hand-tools/c/P01/" title="Used, Scratch, Dented Items" target="_blank"><img class="img-responsive" src="/images/art/useditems-cat-sprite.png"></a>
</div>
</div>
</section>
答案 0 :(得分：0)
不确定为什么会被投票。一个简单的jQuery插件可以做到这一点：
(function(global, $) {
if (!global.matchMedia) {
throw new Error("This browser does not support matchMedia()");
}
$.fn.lazyLoad = function(overrides) {
var options = $.extend({}, $.fn.lazyLoad.defaults, overrides || {});
this.find("[data-lazyload-url]").each(function() {
var url = this.getAttribute("data-lazyload-url"),
media = this.getAttribute("data-lazyload-media"),
$target = $(this).addClass(options.loadingClass);
if (!media || global.matchMedia(media)) {
$.ajax(url)
.done(function(data) {
$target.html(data);
})
.fail(function(xhr, status, error) {
$target.html("Error: " + xhr.status);
})
.always(function() {
$target.removeClass(options.loadingClass);
});
}
});
};
$.fn.lazyLoad.defaults = {
loadingClass: "loading"
};
})(this, jQuery);
使用它：
$(document).lazyLoad();
一些示例HTML：
<body>
<div data-lazyload-url="/foo/bar">
Load for every browser
</div>
<div data-lazyload-url="/baz" data-lazyload-media="screen and max-width: 500px">
Load for 500px and smaller viewports
</div>
</body>
这使用最新版本的jQuery，但我想你可能需要进行的唯一更改是调用$.ajax。
答案 1 :(得分：0)
尝试给html元素一个默认样式display：none;和一个在JS移动检测（实际手持）脚本中返回的id，如：
if(/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
$('#yourID').removeAttr('style');
}
我个人会使用像Mobile Detect（https://github.com/serbanghita/Mobile-Detect）这样的服务器端PHP类，并将设备类型（无论是移动设备还是平板电脑）放在会话中，以便随时随地使用它。
答案 2 :(得分：0)
此代码检查所有可能的移动设备
var mobile = (function (b) {
var a = navigator.userAgent || navigator.vendor || window.opera;
if (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino/i.test(a) || /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0, 4))) return true;
})();
if (mobile === true){
// show mobile content here
// example:
$.ajax({
url: "mobilecontent.html"
}).done(function() {
$('#mobilecontainer').html(data);
});
}
代码略有改动detectmobilebrowsers
答案 3 :(得分：0)
第一种解决方案是使用单独的ajax请求来加载特定内容，前提是该设备恰好是移动设备。
if(/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|OperaMini/i.test(navigator.userAgent)){
...#Ajax request here to load the section content
}
如果需要，第二种方法可以在后端处理此问题。发送到服务器的请求可用于获取有关用户代理的信息。如果是铁路
request.env["HTTP_USER_AGENT"]
用于检测使用的用户代理。这可以用于与上述移动设备进行比较。只有当请求来自移动设备时，才能使部分内容呈现。
<% if mobile? %>
<section>
</section>
<% end %>